/Engine/Plugins/Animation/IKRig/Source/IKRig/Public/Retargeter/IKRetargetSettings.h
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FTargetChainSettings
FTargetChainFKS...
FK
All settings for FK retargeting of this chain. FK retargeting runs before the IK pass.
FTargetChainIKS...
IK
All settings controlling the IK Goal assigned to this chain.
FTargetChainSpe...
SpeedPlanting
All settings associated with planting IK goals based on the speed of the source.